package collection;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

public class ListDemo {
    public static void main(String[] args){
        /*
        List<String> list=new ArrayList<>();
        list.add("one");
        list.add("two");
        list.add("three");
        list.add("fore");
        list.add("five");

        List<String> list=new LinkedList<>();
        list.add("one");
        list.add("two");
        list.add("three");
        list.add("fore");
        list.add("five");
        list.add("one");
        System.out.println("list="+list);

        String e=list.get(2);
        System.out.println(e);

        for (int i=0;i<list.size();i++){
            System.out.println(list.get(i));
        }

        Iterator<String> it=list.iterator();
        while (it.hasNext()){
            String str=it.next();
            System.out.println(str);
        }

        for (String str:list){
            System.out.println(str);
        }
        System.out.println("-----------------------");

        //list.set(2,"six");
        String old=list.set(2,"six");
        System.out.println(list);
        System.out.println(old);

        //list.remove(2);System.out.println(list);
        String s=list.remove(2);
        System.out.println(list);
        System.out.println(s);
        //String s=list.remove(3); String s=list.get(4); String s=list.set(2,six);


        list.add(3,"seven");
        System.out.println(list);

         */
        /*
        List<String> list=new ArrayList<>();
        list.add("one");
        list.add("two");
        list.add("three");
        list.add("fore");
        list.add("five");

         */

        List<String> list=new LinkedList<>();
        list.add("one");
        list.add("two");
        list.add("three");
        list.add("fore");
        list.add("five");
        list.add("one");
        System.out.println("list="+list);



        String e=list.get(2);
        System.out.println(e);

        for (int i=0;i<list.size();i++){
            System.out.println(list.get(i));
        }

        Iterator<String> it=list.iterator();
        while (it.hasNext()){
            String str=it.next();
            System.out.println(str);
        }

        for (String str:list){
            System.out.println(str);
        }
        System.out.println("-----------------------");

        //list.set(2,"six");
        String old=list.set(2,"six");
        System.out.println(list);
        System.out.println(old);

        //list.remove(2);System.out.println(list);
        String s=list.remove(2);
        System.out.println(list);
        System.out.println(s);
        //String s=list.remove(3); String s=list.get(4); String s=list.set(2,six);


        list.add(3,"seven");
        System.out.println(list);

    }
}
